"Shake It Off" is a sang recordit bi American sangster-sangwriter Taylor Swift for her fift studio album, 1989 (2014). Written bi Swift, Max Martin an Shellback, it is a uptempopop track an featurs a depairtur frae Swift's earlier kintra pop muisical style. "Shake It Off" is the saxt track on the album an serves as the lead single. The sang premiered durin a Yahoo! live stream session on 18 August 2014; its muisic video wis released the same day an aw. Several oors later, the sang wis made available for digital dounload.